Norfolk Cycle Routes
This is the link to Norfolk County Council’s information about routes throughout the County. they have done a lot of work to link various long distance and costal paths, to provide great off road days out and longer trips.
https://www.norfolk.gov.uk/out-and-about-in-norfolk/norfolk-trails/cycle-routes
More info and a video from Norfolk County Council:
http://www.visitnorfolk.co.uk/things-to-do/Cycling.aspx